ok i'm wondering if anyone has rewired or "bypassed" the nats or security issues w/ using other ecus w/ a 99. i have a friend whos got a 98 jwt ecu and wanna use it for my boost setup and after talking with jwt they said you can u this ecu if you rewire or bypass the security stuff. i've looked on alldata and can't seem to find anything. Any advice? Thanks

 

Someone on here might be able to assist you, BUT a copy of the FSM should give you everything you need to know.

 

I'm pretty sure its been done using a 96 ECU and JWT has to program it specifically for the 99 w/ NATS. I am not sure about the details of it as it has been years since I looked into this but I don't think that the keys had to be reprogrammed or the immobilizer reset. Zack342 had it in his 4th gen several years ago.

 

yea i believe i used to have zachs jwt ecu then i sold it to another org member. wish i kept it so i could have just got it reflashed but i gotta another one coming so o well but i was seeing if i could avoid sending it to JWT and waiting the turn around time

 

You need to move one of the crank wires as well. I don't think you have to worry about nats when the ecu is switched since older ecu's don't need the signal from it to turn on the car.